US11812319B2ActiveUtilityA1

Physical uplink shared channel repetitions during handover

68
Assignee: QUALCOMM INCPriority: Mar 31, 2021Filed: Mar 31, 2021Granted: Nov 7, 2023
Est. expiryMar 31, 2041(~14.7 yrs left)· nominal 20-yr term from priority
Inventors:Hung Dinh LyGokul Sridharan
H04W 36/0072H04W 36/185H04W 36/083H04W 36/18H04W 36/0069H04W 36/08H04W 36/00692H04W 36/362H04W 72/1268H04W 72/0446H04L 1/08
68
PatentIndex Score
0
Cited by
8
References
30
Claims

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a source base station associated with a source master cell group (MCG), a physical uplink shared channel (PUSCH) repetition in one or more slots of the source MCG during a handover of the UE from the source MCG to a target MCG. The UE may perform, to a target base station associated with the target MCG, an uplink transmission in one or more slots to the target MCG during the handover, wherein PUSCH repetitions associated with the source MCG that overlap in time with the uplink transmission to MCG are canceled and a counting of the PUSCH repetitions is based at least in part on slots of the source MCG associated with canceled PUSCH repetitions. Numerous other aspects are described.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. A method of wireless communication performed by a user equipment (UE), comprising:
 transmitting, to a source base station associated with a source master cell group (MCG), a physical uplink shared channel (PUSCH) repetition in each of one or more slots of the source MCG during a dual active protocol stack (DAPS)-based handover of the UE from the source MCG to a target MCG; and 
 performing, to a target base station associated with the target MCG, an uplink transmission in one or more slots to the target MCG during the DAPS-based handover, wherein PUSCH repetitions associated with the source MCG that overlap in time with the uplink transmission to MCG are canceled and a counting of the PUSCH repetitions is based at least in part on slots of the source MCG associated with canceled PUSCH repetitions. 
 
     
     
       2. The method of  claim 1 , wherein the counting of the PUSCH repetitions includes counting the slots of the source MCG associated with the canceled PUSCH repetitions. 
     
     
       3. The method of  claim 1 , wherein the counting of the PUSCH repetitions includes not counting the slots of the source MCG associated with the canceled PUSCH repetitions. 
     
     
       4. The method of  claim 1 , wherein the PUSCH repetitions associated with the source MCG fully overlap in time with the uplink transmission to MCG. 
     
     
       5. The method of  claim 1 , wherein the PUSCH repetitions associated with the source MCG partially overlap in time with the uplink transmission to MCG. 
     
     
       6. The method of  claim 1 , wherein the uplink transmission in the one or more slots of the target MCG during the DAPS-based handover is one of: a physical uplink control channel transmission, a PUSCH transmission, a sounding reference signal, a physical random access channel transmission, or a message 3 (Msg3) PUSCH transmission. 
     
     
       7. The method of  claim 1 , wherein the DAPS-based handover is associated with a frequency division duplexing (FDD)-to-FDD handover, a time division duplexing (TDD)-to-TDD handover, a TDD-to-FDD handover, or an FDD-to-TDD handover, wherein FDD is associated with a paired spectrum and TDD is associated with an unpaired spectrum. 
     
     
       8. The method of  claim 1 , wherein the PUSCH repetitions are associated with a PUSCH repetition Type A, in which a same symbol allocation is applied in each of the one or more slots of the source MCG. 
     
     
       9. The method of  claim 1 , further comprising:
 canceling the PUSCH repetitions associated with the source MCG that overlap in time with the uplink transmission to MCG. 
 
     
     
       10. The method of  claim 1 , further comprising:
 canceling the PUSCH repetitions associated with the source MCG based at least in part on a lack of UE capability for power sharing between the source MCG and the target MCG during the DAPS-based handover. 
 
     
     
       11. The method of  claim 1 , further comprising:
 canceling the PUSCH repetitions associated with the source MCG based at least in part on a UE capability of canceling uplink transmissions during the DAPS-based handover. 
 
     
     
       12. The method of  claim 1 , further comprising:
 canceling the PUSCH repetitions associated with the source MCG based at least in part on an intra-frequency DAPS-based handover. 
 
     
     
       13. The method of  claim 1 , wherein:
 the one or more slots of the source MCG include one or more of uplink slots or special slots; and 
 the one or more slots of the target MCG include one or more of uplink slots or special slots. 
 
     
     
       14. A method of wireless communication performed by a source base station, comprising:
 transmitting, to a user equipment (UE), a configuration associated with a quantity of physical uplink shared channel (PUSCH) repetitions; and 
 receiving, from the UE, a PUSCH repetition in each of one or more slots of a source master cell group (MCG) associated with the source base station during a dual active protocol stack (DAPS)-based handover of the UE from the source MCG to a target MCG, wherein PUSCH repetitions that overlap in time with an uplink transmission to the target MCG are canceled and a counting of the PUSCH repetitions is based at least in part on slots of the source MCG associated with canceled PUSCH repetitions. 
 
     
     
       15. The method of  claim 14 , wherein the counting of the PUSCH repetitions is based at least in part on counting the slots of the source MCG associated with the canceled PUSCH repetitions. 
     
     
       16. The method of  claim 14 , wherein the counting of the PUSCH repetitions is based at least in part on not counting the slots of the source MCG associated with the canceled PUSCH repetitions. 
     
     
       17. A user equipment (UE) for wireless communication, comprising:
 a memory; and 
 one or more processors, operatively coupled to the memory, configured to:
 transmit, to a source base station associated with a source master cell group (MCG), a physical uplink shared channel (PUSCH) repetition in each of one or more slots of the source MCG during a dual active protocol stack (DAPS)-based handover of the UE from the source MCG to a target MCG; and 
 perform, to a target base station associated with the target MCG, an uplink transmission in one or more slots to the target MCG during the DAPS-based handover, wherein PUSCH repetitions associated with the source MCG that overlap in time with the uplink transmission to MCG are canceled and a counting of the PUSCH repetitions is based at least in part on slots of the source MCG associated with canceled PUSCH repetitions. 
 
 
     
     
       18. The UE of  claim 17 , wherein the counting of the PUSCH repetitions includes counting the slots of the source MCG associated with the canceled PUSCH repetitions. 
     
     
       19. The UE of  claim 17 , wherein the counting of the PUSCH repetitions includes not counting the slots of the source MCG associated with the canceled PUSCH repetitions. 
     
     
       20. The UE of  claim 17 , wherein the uplink transmission in the one or more slots of the target MCG during the DAPS-based handover is one of: a physical uplink control channel transmission, a PUSCH transmission, a sounding reference signal, a physical random access channel transmission, or a message 3 (Msg3) PUSCH transmission. 
     
     
       21. The UE of  claim 17 , wherein the DAPS-based handover is associated with a frequency division duplexing (FDD)-to-FDD handover, a time division duplexing (TDD)-to-TDD handover, a TDD-to-FDD handover, or an FDD-to-TDD handover, wherein FDD is associated with a paired spectrum and TDD is associated with an unpaired spectrum. 
     
     
       22. The UE of  claim 17 , wherein the PUSCH repetitions are associated with a PUSCH repetition Type A, in which a same symbol allocation is applied in each of the one or more slots of the source MCG. 
     
     
       23. The UE of  claim 17 , wherein the one or more processors are further configured to:
 cancel the PUSCH repetitions associated with the source MCG that overlap in time with the uplink transmission to MCG. 
 
     
     
       24. The UE of  claim 17 , wherein the one or more processors are further configured to:
 cancel the PUSCH repetitions associated with the source MCG based at least in part on a lack of UE capability for power sharing between the source MCG and the target MCG during the DAPS-based handover. 
 
     
     
       25. The UE of  claim 17 , wherein the one or more processors are further configured to:
 cancel the PUSCH repetitions associated with the source MCG based at least in part on a UE capability of canceling uplink transmissions during the DAPS-based handover. 
 
     
     
       26. The UE of  claim 17 , wherein the one or more processors are further configured to:
 cancel the PUSCH repetitions associated with the source MCG based at least in part on an intra-frequency DAPS-based handover. 
 
     
     
       27. The UE of  claim 17 , wherein:
 the one or more slots of the source MCG include one or more of uplink slots or special slots; and 
 the one or more slots of the target MCG include one or more of uplink slots or special slots. 
 
     
     
       28. A source base station for wireless communication, comprising:
 a memory; and 
 one or more processors, operatively coupled to the memory, configured to:
 transmit, to a user equipment (UE), a configuration associated with a quantity of physical uplink shared channel (PUSCH) repetitions; and 
 receive, from the UE, a PUSCH repetition in each of one or more slots of a source master cell group (MCG) associated with the source base station during a dual active protocol stack (DAPS)-based handover of the UE from the source MCG to a target MCG, wherein PUSCH repetitions that overlap in time with an uplink transmission to the target MCG are canceled and a counting of the PUSCH repetitions is based at least in part on slots of the source MCG associated with canceled PUSCH repetitions. 
 
 
     
     
       29. The source base station of  claim 28 , wherein the counting of the PUSCH repetitions is based at least in part on counting the slots of the source MCG associated with the canceled PUSCH repetitions. 
     
     
       30. The source base station of  claim 28 , wherein the counting of the PUSCH repetitions is based at least in part on not counting the slots of the source MCG associated with the canceled PUSCH repetitions.

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